For a decade and a half, this book has been considered the most reliable textbook on the subject for all undergraduate students. This third edition has been revised as per the new AECC syllabus set down by the UGC and has been made extremely user-friendly. The aim of this edition is not only to create an awareness of environmental issues, but also to bring about pro-environmental action. The new, two-colour design of this edition will appeal to students and aid in reading and retention. The unique feature of this textbook is the accompanying App containing additional questions, colour pictures and video lectures. Salient features • Tailored precisely to the AECC curriculum set down by the UGC. • Relevant case studies, examples and photographs create an interest in the reader. • Colour plates showing the biogeographical zones, and various species of flora and fauna, add value to Unit 4. • Questions that induce reflection and follow-up action are highlighted in boxes and provide a thought-provoking feature. • The thread of 'sustainable living' runs through the entire book, thus awakening the students to reality and suggests solutions for commonly encountered environmental issues. • The exclusive App provides various types of practice questions (MCQs, fill up the blanks, match the following, colour pictures and video lectures) to aid the student in revising on-the-go.